/-app
TopLayout.ts
main.css
start.ts
/-docs ...
/-docs/types ...
text.ts
api.ts
/-files
/-imports
/-storage
/-typings
codemirror.d.ts
knockout.d.ts
websql.d.ts
errors.js
functions.ts
index.html
try.js 
xxxxxxxxxx
 
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  export class TextDocumentHandler implements DocumentHandler {
10
​
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    private _doc: CodeMirror.Doc = null;
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    private _text: string = null;
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    private _editor: { cm: CodeMirror; host: HTMLElement; } = null;
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    private _saveTimer = new Timer();
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​
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    constructor(
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      private _read: (property: string) => string,
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      private _write: (property: string, content: string) => void) {
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      this._saveTimer.ontick = () => this.save();
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    }
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    getText() {
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      if (this._text === null) {
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        if (this._doc)
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          this._text = this._doc.getValue();
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        else
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          this._text = this._read(null);
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      }
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      return this._text;
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    }
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    getDoc() {
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      if (!this._doc) {
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        this._doc = new CodeMirror.Doc(this.getText());
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        CodeMirror.on(this._doc, 'change', (instance, changeObj) => this._onDocChange(changeObj));
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      }
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      return this._doc;
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    }
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​
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    open(): HTMLElement {
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​
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      return this._getEditor().host;
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44
    }
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​
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    close() {
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      this._saveTimer.endWaiting();
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      if (this._editor) {
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        var e = this._editor;
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        this._editor = null;
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        returnEditor(e);
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      }
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    }
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    save() {
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      this._write(null, this.getText());
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    }
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​
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    private _getEditor() {
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      if (!this._editor) {
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        this._editor = requestEditor();
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        this._editor.cm.swapDoc(this.getDoc());
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      }
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      return this._editor;
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    }
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    private _onDocChange(changeObj: CodeMirror.EditorChange) {
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      this._saveTimer.reset();
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    }
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  }
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  var editorCache: { cm: CodeMirror; host: HTMLElement; } [] = [];
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​
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  function requestEditor(): { cm: CodeMirror; host: HTMLElement; } {
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    if (editorCache.length)
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      return editorCache.pop();
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    var host: HTMLElement = null;
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    var cm = new CodeMirror(_host => host = _host);
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    return { cm: cm, host: host };
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  }
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  function returnEditor(editor: { cm: CodeMirror; host: HTMLElement; }) {
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    editorCache.push(editor);
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  }
88
89
}
61:47